メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.935960428543 43.8082773733438, 141.93607430591 43.8082904658195, 141.936921452975 43.808388435612, 141.93706752283 43.8082803481835, 141.937425073721 43.8085954279263, 141.937484686415 43.8086479780563, 141.937005539966 43.8088758441938, 141.936522472483 43.8091055798092, 141.936563548985 43.809155865489, 141.936783889854 43.8094214867643, 141.936304665904 43.8096349879941, 141.935441838013 43.8088088737155, 141.934437787599 43.8086896985964, 141.934331209233 43.808677801936, 141.934437357955 43.8081038757779, 141.93453668604 43.8081140467238, 141.934561166188 43.8081165578747, 141.935960428543 43.8082773733438)) ^^http://www.opengis.net/ont/geosparql#wktLiteral